Kevin Hamilton McDonald (born May 16, 1961) is a Canadian actor and comedian. He is a member of the comedy troupe The Kids in the Hall, who have appeared together in a number of stage, television and film productions, most notably the 1988–1995 TV series ''The Kids in the Hall''. He played Pastor Dave in ''That '70s Show'', and starred as a co-pilot in the 2011 web comedy series ''Papillon''. He also does voice work in animation, most notably as Agent Wendy Pleakley in the ''Lilo & Stitch'' franchise, Waffle in ''Catscratch'', and the Almighty Tallest Purple in ''Invader Zim''.